The bar chart compares the proportion of the Australian women by their age when they gave birth first time, from 1966 to 2006.
Overall, in 1966, the most of first child have burnt of the mothers that they were in their 19 until 24 years old. In next 20 years the percentage of them have had a significant decrease. In the end of whole period, this amount felt more than previous years.
In a closer examination, it is clear that the rate of women over their 40 in this survey, was less than the other ages. Actually, it was Under the 10 percent in each year. The maximum of them birth their first child in 2006 (approximately 5 percent).
Furthermore, the amount of adolescents women in their early 30 decades, in 1966 was just under 10 percent, and after a slight rise in 1986, it reach to its highest point in 2006, over the 40 percent.
Moreover, the percentage of under 19 mothers had a dramatic dip. Whereas, among 34 to 39 years women, a considerable increase to more than a quarter is witnessed. Also, for women with 25 to 30 years old, we can see a fluctuation in 1986.